Expressive

rs117618017 - APH1B

Magnitude 4.5 · 7 studies on file

Reported associations

  • New insights into the genetic etiology of Alzheimer's disease and related dementias - Unknown journal (n.d.) · Unknown authors · PubMed 35379992

    ABSTRACT: Characterization of the genetic landscape of Alzheimer's disease (AD) and related dementias (ADD) provides a unique opportunity for a better understanding of the associated pathophysiological processes. We performed a two-stage genome-wide association study totaling 111,326 clinically diagnosed/'proxy' AD cases and 677,663 controls. We found 75 risk loci, of which 42 were new at the time of analysis. Pathway enrichment analyses confirmed the involvement of amyloid/tau pathways and highlighted microglia implication. Gene prioritization in the new loci identified 31 genes that were suggestive of new genetically associated processes, including the tumor necrosis factor alpha pathway through the linear ubiquitin chain assembly complex. We also built a new genetic risk score ass

  • Multi-ancestry meta-analysis and fine-mapping in Alzheimer's disease - Unknown journal (n.d.) · Unknown authors · PubMed 37198259

    ABSTRACT: Genome-wide association studies (GWAS) of Alzheimer's disease are predominantly carried out in European ancestry individuals despite the known variation in genetic architecture and disease prevalence across global populations. We leveraged published GWAS summary statistics from European, East Asian, and African American populations, and an additional GWAS from a Caribbean Hispanic population using previously reported genotype data to perform the largest multi-ancestry GWAS meta-analysis of Alzheimer's disease and related dementias to date. This method allowed us to identify two independent novel disease-associated loci on chromosome 3. We also leveraged diverse haplotype structures to fine-map nine loci with a posterior probability >0.8 and globally assessed the heterogeneity

  • A genome-wide association study with 1,126,563 individuals identifies new risk loci for Alzheimer's disease - Unknown journal (n.d.) · Unknown authors · PubMed 34493870

    ABSTRACT: Late-onset Alzheimer's disease is a prevalent age-related polygenic disease that accounts for 50-70% of dementia cases. Currently, only a fraction of the genetic variants underlying Alzheimer's disease have been identified. Here we show that increased sample sizes allowed for identification of seven previously unidentified genetic loci contributing to Alzheimer's disease. This study highlights microglia, immune cells, and protein catabolism as relevant to late-onset Alzheimer's disease, while identifying and prioritizing previously unidentified genes of potential interest. We anticipate that these results can be included in larger meta-analyses of Alzheimer's disease to identify further genetic variants which contribute to Alzheimer's pathology. FULL TEXT: [INTRO]

  • Whole exome sequencing analyses identified novel genes for Alzheimer's disease and related dementia - Unknown journal (n.d.) · Unknown authors · PubMed 39129223

    ABSTRACT: Abstract INTRODUCTION The heritability of Alzheimer's disease (AD) is estimated to be 58%-79%. However, known genes can only partially explain the heritability. METHODS Here, we conducted gene‐based exome‐wide association study (ExWAS) of rare variants and single‐variant ExWAS of common variants, utilizing data of 54,569 clinically diagnosed/proxy AD and related dementia (ADRD) and 295,421 controls from the UK Biobank. RESULTS Gene‐based ExWAS identified 11 genes predicting a higher ADRD risk, including five novel ones, namely FRMD8, DDX1, DNMT3L, MORC1, and TGM2, along with six previously reported ones, SORL1, GRN, PSEN1, ABCA7, GBA, and ADAM10. Single‐variant ExWAS identified two ADRD‐associated novel genes, SLCO1C1 and NDNF. The identified genes were predominantl

  • The first genome‐wide association study in the Argentinian and Chilean populations identifies shared genetics with Europeans in Alzheimer's disease - Unknown journal (n.d.) · Unknown authors · PubMed 37985413

    ABSTRACT: Abstract INTRODUCTION Genome‐wide association studies (GWAS) are fundamental for identifying loci associated with diseases. However, they require replication in other ethnicities. METHODS We performed GWAS on sporadic Alzheimer's disease (AD) including 539 patients and 854 controls from Argentina and Chile. We combined our results with those from the European Alzheimer and Dementia Biobank (EADB) in a meta‐analysis and tested their genetic risk score (GRS) performance in this admixed population. RESULTS We detected apolipoprotein E ε4 as the single genome‐wide significant signal (odds ratio  = 2.93 [2.37-3.63], P = 2.6 × 10−23). The meta‐analysis with EADB summary statistics revealed four new loci reaching GWAS significance. Functional annotations of these loc

  • Genome-wide meta-analysis identifies new loci and functional pathways influencing Alzheimer's disease risk - Unknown journal (n.d.) · Unknown authors · PubMed 30617256

    ABSTRACT: Alzheimer's disease (AD) is highly heritable and recent studies have identified over 20 disease-associated genomic loci. Yet these only explain a small proportion of the genetic variance, indicating that undiscovered loci remain. Here, we performed a large genome-wide association study of clinically diagnosed AD and AD-by-proxy (71,880 cases, 383,378 controls). AD-by-proxy, based on parental diagnoses, showed strong genetic correlation with AD (rg=0.81). Meta-analysis identified 29 risk loci, implicating 215 potential causative genes. Associated genes are strongly expressed in immune-related tissues and cell types (spleen, liver and microglia). Gene-set analyses indicate biological mechanisms involved in lipid-related processes and degradation of amyloid precursor proteins. We

  • Multi-trait association analysis reveals shared genetic loci between Alzheimer's disease and cardiovascular traits - Unknown journal (n.d.) · Unknown authors · PubMed 39537608

    ABSTRACT: Several cardiovascular traits and diseases co-occur with Alzheimer's disease. We mapped their shared genetic architecture using multi-trait genome-wide association studies. Subsequent fine-mapping and colocalisation highlighted 16 genetic loci associated with both Alzheimer's and cardiovascular diseases. We prioritised rs11786896, which colocalised with Alzheimer's disease, atrial fibrillation and expression of PLEC in the heart left ventricle, and rs7529220, which colocalised with Alzheimer's disease, atrial fibrillation and expression of C1Q family genes. Single-cell RNA-sequencing data, co-expression network and protein-protein interaction analyses provided evidence for different mechanisms of PLEC, which is upregulated in left ventricular endothelium and cardiomyocyte

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